K&N parts matching Wesfil WA840 air filter

The Wesfil WA840 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Wesfil air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Kamel Chemirou, Narcy, France
Bon produit arrivé rapidement malgré la distance
Louis, Northern New Jersey
Works great. I haven't driven the car much since I'm still getting it up to snuff. It was neglected for many years before I bought it. Car (1990 Audi 200 quattro turbo) pulls a little harder now but I bought it mostly for ease of cleaning and the infrequent cleaning intervals. These cars have a difficult-to-reach airbox.
Ricky DiPietro, Concord, New Hampshire
The K&N Air Filter that I recently purchased for my 2004 Toyota Celica GT has been an incredible upgrade! Since the K&N upgrade my Celica GT has gained improvements in both acceleration, and over all gas mileage! Also, judging by both sound & feel the engine is without question running the way it was intended! Thank you K&N for making such an amazing product!
33-2041-1 K&N 33-2041-1 Replacement Air Filter
List Price: $81.99
Your Price: $52.99
K&N Special Order Repl Fltr
  • Designed to Increase Power
  • Million Mile Limited Warranty
33-2500 K&N 33-2500 SPECIAL ORDER Repl Fltr
Your Price: $66.99